History NightmareFuel / KingdomHearts

** Worse is that several of these bosses are [[TheVoiceless completely silent]]. They don't even grunt in pain when hit. [[VideoGame/KingdomHeartsI The Unknown]] only "speaks" through ominous, [[VaguenessIsComing vague]] text appearing on the screen. [[VideoGame/KingdomHeartsII The Lingering Will]] communicates through subtitles backed up by nothing but faint, metallic, ghostly moaning. And [[VideoGame/KingdomHeartsBirthBySleep the Mysterious Figure]] remains totally silent and retreats by just... fading out of existence. Worse is that when pausing the game against the latter boss, the only "tip" the game offers is "? ? ?".
** Even worse? These bosses often appear completely without warning in previous locations, the player usually only finding out when their introductory cutscene has started playing. At which point, it's far, ''far'' too late to back out. So if you're exploring and stumble across one of these bosses by accident? Expect a fairly-quick trip to the GameOver screen.

** Worse is that several of these bosses are [[TheVoiceless completely silent]]. They don't even grunt in pain when hit. [[VideoGame/KingdomHeartsI The Unknown]] only "speaks" through ominous, [[VaguenessIsComing vague]] text appearing on the screen. [[VideoGame/KingdomHeartsII The Lingering Will]] communicates through subtitles backed up by nothing but faint, metallic, ghostly moaning. And [[VideoGame/KingdomHeartsBirthBySleep the Mysterious Figure]] remains totally silent and retreats by just... fading out of existence. Worse is that when pausing the game, the only "tip" the game offers is "? ? ?".

** Even worse? These bosses often appear completely without warning in previous locations, the player usually only finding out when their introductory cutscene has started playing. At which point, it's far, ''far'' too late to back out. So if you're exploring and stumbles across one of these bosses by accident? Expect a fairly-quick trip to the GameOver screen.

* In many games, there exists a {{Superboss}} stronger than any other adversary in the game that serves as a SequelHook towards the next game. Why is this so scary? Purely because ''[[NothingIsScarier absolutely nothing about them is explained at the time]]'', leaving the player up against a horrifically-strong foe with absolutely no idea who, or even ''what'', they even are.

* The Japanese version of Axel's kamikaze death was bad enough that it had to be censored for Western audience. Axel's element is fire, so he essentially burned himself alive.

[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/images_5_16.jpeg]]

* TheHeartless as a concept. These shadowy creatures are the result of people losing their hearts to the darkness and essentially becoming [[AndThenJohnWasAZombie zombies]] that mindlessly attack anyone they find, turning ''them'' into Heartless as well. Some Heartless can be [[CuteMonster deceptively adorable]], while others become outright {{Eldritch Abomination}}s. And that's not getting into the [[EmptyShell Nobodies]] - the bodies of strong-willed individuals who lost their hearts to the darkness. They look more like something out of ''Anime/NeonGenesisEvangelion'' than anything, and though it's possible for them to gain a heart, most are just as instinct-driven as the Heartless. The only consolation is that, if a person's Heartless ''and'' Nobody are destroyed, they can come BackFromTheDead. But that'd require them to have a strong enough will for their body to ''survive'' losing its heart. Otherwise, enjoy being KilledOffForReal!

* Not that this needs to be said, as he's the image for this page, but Master Xehanort. Literally everything about Master Xehanort.
** See that face? See it? Yeah - that is his ''normal'' face!

[[quoteright:350:[[VideoGame/KingdomHearts3DDreamDropDistance https://static.tvtropes.org/pmwiki/pub/images/Master_Xehanort_3D_634.png]]]]
[[caption-width-right:350: [[LargeHam FEEL]] [[TheCorruption THE]] [[CastingAShadow DARKNESS]]!]]
%% The page image might have been referenced below with "see above", or "see the above image". Just keep that in mind. %%

----

* Deep Jungle was a peculiar case when its villain deaths are taken into account. Sabor's final confrontation ends with the leopard struggling to both stand and see, and then the cat just sort of, gives up and dies, earning you one of its teeth as a trophy. The boss against Clayton ends similarly, only this time it's the Stealth Sneak, and then it's full weight crushes Clayton, who still had some of his sense of self left, and they both disappear together.

* TheHeartless as a concept. These shadowy creatures are the result of people losing their hearts to the darkness and essentially becoming [[AndThenJohnWasAZombie zombies]] that mindlessly attack anyone they find, turning ''them'' into Heartless as well. Some Heartless can be [[CuteMonster deceptively adorable]], while others become outright {{Eldritch Abomination}}s. And that's not getting into the [[EmptyShell Nobodies]] - the bodies of strong-willed individuals who lost their hearts to the darkness. They look more like something out of ''Anime/NeonGenesisEvangelion'' than anything, and though it's possible for them to gain a heart, most are just as instinct-driven as the Heartless. The only consolation is that, if a person's Heartless ''and'' Nobody are destroyed, they can come BackFromTheDead. But that'd require them to have a strong enough will for heir body to ''survive'' losing its heart. Otherwise, enjoy being KilledOffForReal!